Subtract 72/50 from 9/90, Solve 9/90

Subtract 72/50 from 9/90

1^st number: 9/90, 2^nd number: 1 22/50

9/90 - 72/50 is -67/50.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 90 × 5 = 450,
9/90 = 9 × 5/90 × 5 = 45/450
Likewise, for the 2nd fraction, since 50 × 9 = 450,
72/50 = 72 × 9/50 × 9 = 648/450
Subtract the two like fractions:
45/450 - 648/450 = 45 - 648/450 = -603/450
After reducing the fraction, the answer is -67/50

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